Move quad word between xmm and general register in ml64?

Question

In a simple program written for Microsoft x64 assembler, I want to move a 64-bit value between the SSE register (say xmm0) and the general register (say rcx), as in Intel syntax in MASM>

mov xmm0, rcx
...
mov rcx, xmm0

These two lines generate the following error messages from ml64.exe:

• error A2152: the coprocessor register cannot be the first operand
• Error A2070: Invalid Command Operands

However, it is obvious that this simple task can be performed on x64. For example, the following working x64 program that I can compile and run in the GAS <AT & T syntax using GCC 4.8.2>:

.text
    .globl main
main:
    movl $1, %ecx
    movq %rcx, %xmm0
    movq %xmm0, %rax
    ret

As expected, the return value of this program is 1, and the output objdumpfor main():

1004010d0:   b9 01 00 00 00          mov    $0x1,%ecx
1004010d5:   66 48 0f 6e c1          movq   %rcx,%xmm0
1004010da:   66 48 0f 7e c0          movq   %xmm0,%rax
1004010df:   c3                      retq

, , MASM, , ml64.exe ?

Answer 1

MOV xmm. , , MOVQ (, A & T, ), Intel .

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